<template>
  <div>
    <!-- 面包屑导航 -->
    <el-breadcrumb separator="/">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item>商品列表</el-breadcrumb-item>
    </el-breadcrumb>

    <!-- 卡片页 -->
    <el-card>
      <el-row :gutter="20">
        <el-col :span="8">
          <el-input placeholder="请输入内容" clearable @clear="getGoodsList" v-model="queryInfo.query" class="input-with-select">
            <el-button slot="append" icon="el-icon-search" @click="getGoodsList"></el-button>
          </el-input>
        </el-col>
        <el-col :span="4">
          <el-button type="primary" @click="goAddPage">添加商品</el-button>
        </el-col>
      </el-row>

    <!-- 表格区域 -->
    <el-table
      :data="goodsList"
      border
      stripe
    >
      <el-table-column type="index" label="#"></el-table-column>
      <el-table-column prop="goods_name" label="商品名称"></el-table-column>
      <el-table-column prop="goods_price" label="商品价格(元)" width="95px"></el-table-column>
      <el-table-column prop="goods_weight" label="商品重量" width="70px"></el-table-column>
      <el-table-column label="创建时间" width="160px">
        <template slot-scope="scope">
          {{scope.row.add_time | dateFormat}}
        </template>
      </el-table-column>
      <el-table-column label="操作" width="130px">
        <template slot-scope="scope">
          <el-button icon="el-icon-edit" size="mini" type="primary"></el-button>
          <el-button icon="el-icon-delete" size="mini" type="danger" @click="removeById(scope.row.goods_id)"></el-button>
        </template>
      </el-table-column>
    </el-table>

    <!-- 分页功能 -->
    <el-pagination
      @size-change="handleSizeChange"
      @current-change="handleCurrentChange"
      :current-page="queryInfo.pagenum"
      :page-sizes="[5, 10, 15, 20]"
      :page-size="queryInfo.pagesize"
      layout="total, sizes, prev, pager, next, jumper"
      :total="total"
      background
      >
    </el-pagination>
    </el-card>
  </div>
</template>

<script>
export default {
  data () {
    return {
      goodsList: [],
      queryInfo: {
        query: '',
        pagenum: 1,
        pagesize: 10
      },
      total: 0
    }
  },
  created () {
    this.getGoodsList()
  },
  methods: {
    async getGoodsList () {
      const { data: res } = await this.$http.get('goods', {
        params: this.queryInfo
      })
      if (res.meta.status !== 200) this.$message.error('获取商品列表失败')
      this.goodsList = res.data.goods
      this.total = res.data.total
    },
    handleSizeChange (pagesize) {
      this.queryInfo.pagesize = pagesize
      this.getGoodsList()
    },
    handleCurrentChange (pagenum) {
      this.queryInfo.pagenum = pagenum
      this.getGoodsList()
    },
    async removeById (id) {
      const confirmResult = await this.$confirm('此操作将永久删除该商品, 是否继续?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).catch(err => err)
      // 如果用户确认删除，confirmResult返回值为confirm，取消删除confirmResult为cancel
      if (confirmResult !== 'confirm') {
        return this.$message.info('已取消删除')
      }
      const { data: res } = await this.$http.delete(`goods/${id}`)
      if (res.meta.status !== 200) {
        return this.$message.error('删除失败')
      }
      this.$message.success('删除成功')
      this.getGoodsList()
    },
    goAddPage () {
      this.$router.push('/goods/add')
    }
  }
}
</script>

<style lang="less" scoped>
  .el-table {
    margin-top: 15px
  }
</style>
